<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
<script>
$(document).ready(function(){
	$("input").focus(function(){
		$(this).css("background-color","#cccccc");
	});
	$("input").blur(function(){
		$(this).css("background-color","yellow");
	});
});
</script>
</head>
<body>
Name:<input type="text" name="fullname"><br>
Email:<input type="text" name="email">
</body>
</html>